摘要
采用气相色谱仪的热导检测器，以氦气为载气，可对氮气中氢、氧的含量进行测定。文中通过对色谱仪的试验条件，如柱温、检测器的温度、桥流大小、载气流速及进样量等进行选择，确定了氢、氧、氮的最佳分析条件。本方法对氢、氧的最小检出量分别为０．００２％、０．０２％。
The hydrogen and oxygen contents in the nitrogen gas may be determined with athermal conductivity detector for a gas chromatograph and using argon as the carrier gas.Bymeans of selection of the test conditions of the chromatograph, such as column temperature,detector temperature, bridge current,flow of carrier gas and example amount,the best analy-tical conditions for hydrogen,oxygen and nitrogen were determined.The minimun detectableamounts for hydrogen and oxygen are 0.002%and 0.02%respectively when this method isused.
出处
《低温工程》
CAS
CSCD
1995年第5期33-38,共6页
Cryogenics
关键词
氮
氢
氧
气相色谱仪
Nitrogen
Hydrogen
Oxygen
Analytical method
